61165506166 has 16 divisors (see below), whose sum is σ = 92167618608. Its totient is φ = 30443040000.

The previous prime is 61165506151. The next prime is 61165506187. The reversal of 61165506166 is 66160556116.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1871566 + ... + 1903966.

It is an arithmetic number, because the mean of its divisors is an integer number (5760476163).

Almost surely, 2^61165506166 is an apocalyptic number.

61165506166 is a deficient number, since it is larger than the sum of its proper divisors (31002112442).

61165506166 is a wasteful number, since it uses less digits than its factorization.

61165506166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36687.

The product of its (nonzero) digits is 194400, while the sum is 43.

The spelling of 61165506166 in words is "sixty-one billion, one hundred sixty-five million, five hundred six thousand, one hundred sixty-six".